
%0 Journal Article
%A Margetic, Davor 
%A Butler, Douglas N. 
%A Warrener, Ronald N. 
%T Photolysis of Fused Cyclobutatriazolines: An Adventitious Route to 3,6-Di(2-pyridyl)pyridazonorbornadiene
%J Australian Journal of Chemistry
%D 2001/05/11
%V 53
%N 12
%P 959-963
%K Aziridine; di-&#960;-methane rearrangement; ligands; photochemistry; triazoline.
%R https://doi.org/10.1071/CH00129
%U https://www.publish.csiro.au/paper/CH00129 
%X Ultraviolet irradiation of the triazolines (18a,b) formed by the high-pressure addition of benzyl azide to dimethyl 3,6-di(2-pyridyl)-4,5-diazatetracyclo&#91;6.4.1.0 2,3 .0 9,12 &#93;trideca-3,5,7,10-tetraene-10,12-dicarboxylate (16a) and the related monoester (16b), forms 13&#8211;17% of the expected aziridine (19a,b), together with cyclobutane-cleavage products that include the hitherto unknown pyridazinonorbornadiene (2), its di-&#960;-methane rearrangement product (21) and the corresponding triazoles (20a,b). Mechanistic pathways are discussed. 
